It wouldn't be that weird for a Japanese show to have Japanese subtitles. I have no idea what the "TS file" the first post mentions is, but people with hearing problems etc would need better subtitles than the novelty ones the show comes with.

... which is to say if this file came from Japanese closed-caption subtitles and all episodes of GnT have them then hell yeah we need these every week

I wouldn't think of it as making the translators' work a waste. Google translations present an interesting interpretation of reality, to put it politely.